2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226755Using the generalisation of Zhu's recursion relations to N=2 superconformal field theories we construct modular covariant differential operators for weak Jacobi forms. We show that differential operators of this type characterise the elliptic genera of N=2 superconformal minimal models, and sketch how they can be used to constrain extremal N=2 superconformal field theories.18 pagesHigh Energy Physics - TheoryNumber Theorytext